Params passed to onPageFlipping and onPageFlipped. Describes the spread (target for flipping, current for flipped): leaf index, page indices, semantics, direction.
Direction of the flip.
Index of the leaf that is (being) turned.
Left and right page indices of the spread (after the flip).
Semantic info for the two pages; undefined when pageSemantics not set.
Params passed to onPageFlipping and onPageFlipped. Describes the spread (target for flipping, current for flipped): leaf index, page indices, semantics, direction.